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OFFSHORE TERMS AND ABBREVIATIONS
 
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Terms

Seismic ship - vessel mapping gelogical structures in the seabed by firing air guns transmitting
sound waves into the bottom of the sea. The ecco of the shot is captured by listening
devices/hydrophones being towed behind the vessel. A seismic ship provides data which is an
intrinsic part of the material determining if and when a test drilling should be initiated.
Semisubmersible - movable installation consisting of a deck on stilts, fastened to two or more
pontoons. When in operation, the pontoons are filled with water and lowered beneath the surface. The
installation is normally kept in position by a number of anchors, but may also be fitted with dynamic
positioning equipment (DPE). Usually fitted with own propulsion machinery (max. water depths 600 -
800 metres).
Stand-by Vessel - ship permanently stationed in the vicinity of an installation with the task of
evacuating the rig-crew in an emergency. Also carrying out guard duty keeping other ships away from
the installation.
Submersible - movable installation constructed for drilling operations in shallow waters, where it is
lowered until it rests on the seabed (max. water depth 30 - 40 metres).
Supply ship - vessel transporting stores and equipment to drilling rigs or installations being built or in the production phase. Often called Straight Supply, or Platform Supply Vessel (PSV).

Abbreviations

SEATO - South-East Asian Treaty Organization - defence alliance.
SFT - Statens Forurensningstilsyn - Norwegian Pollution Authority.
SIGGTO - Society of International Gas Tankers and Terminal Operators
SIRE - Ship Inspection Report Programme
SIU - Seafarers' International Union (USA)
SIOS - Senter for Internasjonal Okonomi og Skipsfart ved Norges Handelshoyskole i Bergen -
Norwegian center for maritime economics (Bergen).
SOLAS - Convention on Safety of Life at Sea (IMO, London)
SRF - Sveriges Redareforening, Gothenburg - Swedish Shipowners' Association.
STCW - International Convention on Standards of Training, Certification and Watchkeeping (IMO,
London)
STUFT - Ships Taken Up From Trade - merchant vessels chartered by the military.
SUNAMAM - Brazilian shipping organization representing the authorities.

   
 

 
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